I have a curve in my spine... 42 degrees so I talked to my doc before I start any workout program. I specifically asked for Insanity and he said for me, I should not do it because it is too intense until I build up to it. I wanted to but he advised against it. I do 30 day shred, I do zumba vids, I do yoga vids and I do some of the body rock stuff online. Other than that, I just do cardio and train. I wish I could help more with vids 1675 days ago